• Journal of Korean Institute of Industrial Engineers
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• v.29 no.4
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• pp.304-311
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• 2003

This paper considers a new variation of scheduling problems where jobs are dispatched in batches. The variation is the case where the batch sequence is fixed. The objective is to minimize the sum of the completion times of the batches. This simple environment has a variety of real world applications such as part kitting and customer order scheduling. We show that this problem is binary NP-complete when there exist two machines. For the same problem, we develop an optimal dynamic programming (DP) algorithm which runs in pseudo-polynomial time. We finally prove the optimality of the DP algorithm.

• Journal of Korean Institute of Industrial Engineers
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• v.15 no.1
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• pp.77-87
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• 1989

This paper deals with an automated storage carrousel which handles work-in-process(WIP) such as small parts for kitting. The system has been used predominately for order picking applications. Throughput performance of the system can be measured by the inverse of the expected order picking time. Analytic models are developed for approximating the expected times under the "nearest-item" sequencing rule. The performance of the models are tested through computer simulation. The gap between the two is shown to be reasonably small.

• Journal of Korean Society for Quality Management
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• v.9 no.1
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• pp.22-39
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• 1981

Spandex is a elastomeric fiber in which the-fiber-forming substance is a long chain polymer consisting of at least 85% segmented polyurethane. In the polyurethanes there are the additional oxygen atoms in the main chains of the molecule. The effect of these oxygen atoms is to make the molecule somewhat more flexible. From a physical point of view, elasicity and recovery from stretch are the most important properties of polyurethane, so its use has now expanded into many kitting industry. In this paper, I wish to Test the effect of dyeing condition on the quality of polyurethane.

• Journal of the Korea Convergence Society
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• v.10 no.8
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• pp.121-128
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• 2019

Medical services should be provided not only to patients but also to medical staff who are the main actors of medical treatment. This paper is based on Ethnography, observing the behavior of medical staff performing medical actions and finding what is the most frequent of physical medical treatment. In particular, I observed the need for recognition and performance of the clinical workforce for invasive medical treatment. Based on the Insight from the observation and analysis of medical staff's behavior on intravenous fluid therapy and in-depth interview, I defined four design value factors. Plus, I suggest a design prototype with a proposal for designing a medical consumable kit for intravenous fluid therapy to validate the design elements. Kitting medical consumables simplify the preparation and disposal process throughout the treatment, enabling rapid medical action and increasing work efficiency.